Home / 572,779.20-790,436.16-318,123.84

Finding the Fourth Proportional to 572,779.20, 790,436.16 and 318,123.84

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Solution

The fourth proportional to 572,779.20, 790,436.16 and 318,123.84 is: 439,011.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,779.20 : 790,436.16 = 318,123.84 : x
  2. Step 2: Convert to fraction form
    572,779.20/790,436.16 = 318,123.84/x
  3. Step 3: Cross multiply
    572,779.20x = 790,436.16 × 318,123.84
  4. Step 4: Simplify right side
    572,779.20x = 251,456,586,494.05
  5. Step 5: Solve for x
    x = 251,456,586,494.05/572,779.20
  6. Step 6: Final answer
    x = 439,011.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.